Good first episode, tells you the bases of the world and the circumstances with the MC. However the first Ep. is more of a back story for the MC, so we have no idea what the main idea of the story is about besides fighting vampires. It can have potential or become trash like Tokyo Ghoul, strong beginning meh everything else. Have to wait till next episode, but based on what I've heard from people of reddit who had reas the source, was that it's not that great, just depends on how the studio adapts it, apparently first episode was an very well done though.